County profile · official public datasets

Rockland County, NY

248 public highway bridges tracked in the FHWA National Bridge Inventory: 26.6% rated Good, 63.3% Fair, 10.1% Poor.

248
Public bridges: 26.6%
Good condition: 10.1%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Rockland County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

36th
of 62 on Poor share: 10.1%
Poor-condition share: 248
public highway bridges: 1970
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Rockland County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Rockland County ranks #36 of 62 New York counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.1%). Rockland County, New York contains 248 public highway bridges. Roughly 26.6% are rated “Good,” 63.3% “Fair,” and 10.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

Total bridges

248

Public highway bridges in Rockland County

Good condition

26.6%

66 of 248 rated 7-9

Fair condition

63.3%

157 of 248 rated 5-6

Poor condition

10.1%

25 of 248 rated 4 or below

In-state Poor-share rank

#36 of 62

Among New York counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 248 NBI-tracked bridges by lowest applicable component rating.

Good

26.6% (66)

Fair

63.3% (157)

Poor

10.1% (25)

Rockland County's Poor-condition bridges carry 829,600 vehicle crossings a day

That is 18.7% of the county's reported daily bridge traffic on 10% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 34,567 crossings a day against 15,842 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 241 of 248 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

64.5% of Rockland County's bridges have passed the 50-year mark

160 of the 248 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 26.6% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 13.3% of the county's Poor-condition bridge traffic

RTE I87 over RTE 59 NJ TRANSIT RR, built 1954, carries 110,239 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 25-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 829,600 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

pre-1900

1
1910s

1
1920s

7
1930s

15
1940s

2
1950s

92
1960s

36
1970s

10
1980s

10
1990s

29
2000s

14
2010s

25
2020s

6

What this shows Construction peaked in the 1950s, when 92 of the county's bridges still in the inventory were built, which is 37.1% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1970) matches the New York average (1972).

How Rockland County compares with New York's closest counties by inventory size

The 5 New York counties nearest Rockland County in number of bridges, with their condition splits. Its 10.1% Poor share is the 3rd-lowest of these 6. Its average build year of 1970 against a peer-group mean of 1962 is 8 years newer.

Showing the 5 closest of 61 New York counties eligible for comparison.

Bridge inventory size and condition shares for Rockland County and the 5 New York counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Chemung County	256	38.7%	54.7%	6.6%	1977
Herkimer County	248	46.8%	41.1%	12.1%	1973
Rockland County (this page)	248	26.6%	63.3%	10.1%	1970
New York County	247	13.4%	76.9%	9.7%	1945
Columbia County	243	17.7%	64.2%	18.1%	1963
Kings County	242	24.8%	64%	11.2%	1953

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Rockland County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Rockland County, both outside New York so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside NY (248 bridges here).

Crawford County, AR · 248 bridges
Cherokee County, IA · 248 bridges
Poweshiek County, IA · 248 bridges
Lowndes County, MS · 248 bridges

Similar average build year

Nearest mean year-built outside NY (1970 here).

Hamilton County, OH · avg 1970 · 783 bridges
Yavapai County, AZ · avg 1970 · 543 bridges
Garfield County, OK · avg 1970 · 504 bridges
San Luis Obispo County, CA · avg 1970 · 401 bridges

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 248 Good 66 Fair 157 Poor 25

Fair-condition bridges (157)

Sort:

Rockland County Bridge Snapshot

Condition distribution

Rockland County's Poor-condition bridges carry 829,600 vehicle crossings a day

64.5% of Rockland County's bridges have passed the 50-year mark

One structure carries 13.3% of the county's Poor-condition bridge traffic

How Rockland County compares with New York's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Fair-condition bridges (157)

BROADWAY

ROCKLAND AVENUE

RTE 45

ORANGEBURG ROAD

RTE 987C

PALISADES CTR DRV

RTE I87

KINGS HIGHWAY

RTE 981G

RTE 987C

WEST CLARKSTOWN RO

WASHINGTON STREET

KINGS HIGHWAY

KINGS HIGHWAY

RTE 987C

OAK TREE ROAD

RTE 987C

WEST CLARKSTOWN RO

NORTH MIDDLETOWN R

PASCACK ROAD

RTE 981G

VAN WYCK ROAD

VAN WYCK ROAD

RTE 303

RTE 340

RTE 340

RTE 987C

RTE 987C

OLD MILL ROAD

CONVENT ROAD

N. AIRMONT ROAD EB

RTE 987A

RTE 987C

ORANGEBURG ROAD

ROUTE 9W RAMP

RTE 304

RTE 987E

WILLIAM STREET

RTE 987C

NORTH MAIN STREET

RTE I87

RTE 59

COUNTY ROAD 106

LUDVIGH ROAD

RTE 987C

CRANFORD DRIVE

GRANDVIEW AVENUE

POMONA ROAD

VIOLA ROAD

RTE 987E

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